380HP
Want to keep your stock EFI and E4OD transmission? This 408 is a great fit. With a mild cam, forged pistons, and aluminum heads, it works with your factory intake. Just upgrade the injectors and add a basic tune. We recommend inspecting or rebuilding the transmission and considering a converter upgrade.
450HP
Ready for more punch than the 380 HP version? This 408 steps up with a more aggressive cam and tuning for sharper throttle response, quicker acceleration, and stronger overall performance. Still built with forged pistons, a hydraulic roller camshaft, and aluminum heads—just with more attitude.
500HP
For those who want it all, this 500 HP version builds on the 450 with a more aggressive camshaft for maximum power and performance. It shares the same forged pistons, hydraulic roller setup, and aluminum heads—but delivers harder-hitting acceleration and a more commanding street or strip presence. A serious step up from the 380 and 450 HP builds.